There is only one reference to the natural light of the moon-there will be no need of the moon to shine in the heavenly Jerusalem (Rev_21:23). The change in colour or obscuring of the moon denotes some great judgment, e.g. the moon will be turned into blood before the great Day of the Lord (Act_2:20). So again at the opening of the sixth seal ‘the moon became as blood’ (Rev_6:12). At the sounding of the fourth trumpet a third of the moon’s disk is obscured (Rev_8:12). In Rev_12:1 the woman who appears as a sign in heaven has the moon under her feet as a footstool (see Sun). In Col_2:16 St. Paul warns the Colossians to let no man judge them in respect of a holy day or of the new moon-a monthly festival of the Jews. These things had served their purpose under the old dispensation and were but shadows and types of the realities of the new. See Holy Day.